Control attachment for embroidery-sewing machines



Dec. 21 1926. 1,611,372

' I. RADER CONTROL ATTACHMENT FOR EMBROIDERY SEWING MACHINES Filed March15, 1924 2 Sheets-Shae. 1

a fixed JIIM atter amfII/k m frW/I ml (-10 4 fad Patented Dec. .21,1926.

' UNITED STATES PATENT OFFICE.

IBV'IN RADER, 0F READING, PENNSYLVANIA, ASSIGNOR TO THE NOLDE AND HORSTCOMPANY, OF READING, PENNSYLVANIA, A; CORPORATION OF PENNSYLVANIA.

CONTROL ATTACHMENT FOR EMBROIDEBY-SEWIN G MACHINES.

Application filed March 15, 1924. Serial No. 699,513.

either automatically controlling said needle 1 and feed bar movementsfor the production of repeat patterns, for jointly seating them inadetermined fixed relation, or for independent manipulation thereof asdeit sired. The invention is fully described in connection with theaccompanying drawings, the novel features being set forth in thesubjoined claims.

Fig. 1 is a side elevation of a portion of a sewing machine embodying myinvention, non-essential old construction being omitted for purposes ofclearly presenting the new construction.

Fig. 2 is a vertical of Fig. 1. v I

Fig. 3 is a fragmentary end view looking in the direction of arrow 3,Fig. 1.

section on the line 2-2 Fig. 4 is a separate view of the worm drivegearemployed.

Figs. 5 and 6 are separate views of the discs controlling respectivelythe needle oscillations and the fabric feed.

Fig. 7 indicates an embroidery pattern produced by my improvedattachment.

The type of sewing machine employed is more fully set forth in U. S.patents to Druckerman, No. 1,089,751 of March 10,

1914, and No. 479,739 of July 26, 1892, to-

Dimond. As indicated in the drawings the needle bar 2, which carries theneedle 3 is vertically reciprocated as usual by the head shaft 4, andits lateral oscillation is effected by rocker arm 5 and link 6; saidrocker arm being oscillated as heretofore by said shaft 4, and itsaction on needle bar 2 varied by adjustment of the end of said link6 inthe slotted recess 7 of rocker arm 5. The feed bar 8, for advancing thefabric under the needle between stitches of the latter, is actuated asheretofore by rocker shafts 9 and 10 to effect respectively the raisingand lowering of the toothed fabric engaging foot portion 11,- and thefeeding reciprocative movement of the latter; said shaft 9 as usual 6and 13 in their respective slotted arms 5' and 14. .Link 6 hasheretofore been positioned in its slot 7 of link 5,by a hand or kneeactuated bar 20 engaging one arm 21 of a bell crank pivoted at 22, theother arm 23 thereof being connected to said link end by a connectingmember 24. Link 13 has heretofore been shifted by means ofa hand lever25 on pivot shaft 26, saidshaft having a connecting member 27 to saidlink 13 for varying its engagement in slotted arm 14. Expertmanipulation of the bar 20 and lever 25 enables the production of anyvariety of embroidery stitches within the capability of the machine.

Having in mindthe embroidery machine thus described,n1y inventionrelates to improved attachments thereto which may, when desired, takecontrol of the stitch and feed movements and automaticall actuate themfor the production of desire varying stitch embroidery atterns, or afixed embroidery stitchfor fbllowing fabric stamped pattern outlinesjBeneath the head shaft 4, and arranged transversely thereto, is apattern shaft 40., mounted in a bearing 41 secured to the machine head,and this shaft carries a gear 42 driven by a worm gear 43 on head shaft4. Said gear 43 as shown separately in Fig. 4, has its teeth arrangedwith a dwell or straight tooth portion 43 so that rotation of shaft 4only actuates worm gear 42 part of each revolution, the gears beingtimed so that such revolution occurs when the needle 3 is in raisedposition and free from engagement with the fabric.

Shaft 40 fixedly carries one member 45 of a clutch device, thecooperating member 46, as shown, being formed on the face of a patterndisc 47 loosely mounted on said shaft and movable longitudinallythereof. A secof needle 3 through rimengaging lever 50,

connecting link 51 and lever 52 pivotally actuating connecting member 24to vary the position of link end 6 in slot 7. Pat-tern disc 48 controlsthe fabric feed bar 8 through rim engaging lever 55, connectmg link 56and lever 57 on pivot shaft 26; rotation of the latter acting on link 13through connecting member 27 and lever 25. Tension spring 58, as shown,maintains lever ends 50 and 55 in rim-engaging position to follow therises and falls thereof and the' latter through their respectiveconnections described variously oscillate the needle and vary the fabricfeed as thereb determined, when discs 47 and 48 are shi tedlongitudinally on shaft 40 by hand wheel 48, to engage clutch membersand 46. Disengagement of said clutch members 45 and 46 frees the needleand feed mechanisms for independent control through their respective hanbar 20 and lever 25. Each rotation of shaft 40 will produce one patternas determined by the rises and falls of said disc rims, and continuedrotations thereof will faithfully and accurately produce repeats thereofas desired. Bychanging discs 47 and 48 for others, or merely changingthe peripheries thereof, different repeat patterns may be produced.

For quickly setting the machine at a de-- termined fixed needleoscillation and cooperating fixed fabric feed, as for followingirregular and non-repeat fabric stamped attern outlines, I provide asshown. a hand ever on bracket carried pivot shaft 61, said shaft havinga bell crank, one arm 62 thereof through link 63 rotating cam 64 topress on hand lever 25 and depress same a fixed distance; and the otherbell crank arm 65 through link 66 swinging cam lever 67. Said cam lever67 is adapted to operate a centrally pivoted lever 68, its opposite endcontacting with a collar 69 on bar 20 so as to shift the latter andthrough its connections set link 6 for a determined fixed oscillat-ionof the needle 3.

My improved mechanism thus fully described provides the usualindependent manipulation of the needle oscillation and fabric feed asheretofore. By the mere engagement of clutch members 45 and 46, discs 47and 48 are engaged and rotated and jointly assume control of said needleoscillation and fabric feedfor desired repeat pattern embroiderystitches. And by disengaging said clutch members 45 and 46 and operatinglever 60, a fixed needle oscillation and cooperating fabric feed isjointly effected for following fabric stamped pattern outlines. Thus onemachine is quickly and positivelyadapted for a variety of work,producing accurately desired-patterns with less skilled labor, andgreatly increasing the output. It will of course be understood that theproposed construction herein shown and described may be readily modifiedin detail without departing from the spirit of my invention and I do notdesire to limit myself to the specific mechanism set forth.

What I claim is:

1. In an embroidery sewing machine co1nprising a vertically reci rocatedand variedly oscillatable needle an and a variedl movable fabric-feedmechanism, indepen ently operated means for varying said needleoscillations and fabric-feed movements, and separate means 0 erativejointly upon said normally indepen ently operated means for locking saidneedle oscillatlng and fabric feed movements in fixed adjusted c0-operative relation.

2. In an embroidery sewing machine comprising a vertically reciprocatedand variedly oscillatable needle bar and a variedl movable fabric-feedmechanism, indepen ently operated means for varying said needleoscillations and fabric-feed movenlents, separate means operativejointly upon said normally independently operated means for locking saidoscillating and feed movements in fixed adjusted cooperative relation,separate pattern mechanism operative upon said normally independentlyoperated means for determinedly varying said cooperative oscillating andfeed movements between the needle reciprocations, and a clutch forselectively throwing said pattern mechanism into and out of operation.

3. In an embroidery sewing machine comprising a verticallyreciprocated-and varied- 'ly oscillatable needle bar and a variedlmovable fabric-feed mechanism, indepen 'ent operating means for varyingsaid needle oscillations and fabric-feed movements, pattern mechanismoperative jointly upon said normally independent operating meanscomprising a pattern actuating shaft, means for intermittently rotatingthe same between said needle oscillations, a clutch member on said shaftand a pattern disc loosely carried by said shaft and movablelongitudinally thereof into and out of engagement with said clutchmember. 4. In an embroidery sewing machine comprising a verticallyreciprocated and variedly oscillatable needle bar and a variedly movablefabric-feed mechanism, independent 0 crating means for varying saidneedle osclllations and fabric-feed movements, pattern mechanismoperative jointly upon sa1d normally independent operating means comrising a pattern actuatin shaft, means for intermittently, rotating t 1esame between said needle oscillations, a clutch member on said shaft anda pair of carried by said shaftand jointly movable longitudinallythereof into and out of en,- gagement w1th said clutch member, saidpattern discs loosely discs having cam peripheries adapted torespectively control said needle oscillations and said fabric-feedmovements and their cooperative relation. 7

5. In an embroidery sewing machine comprising a vertically reciprocatedand variedly oscilla-table needle bar and a variedly movable fabric-feedmechanism, and a movable bar for varying said needle oscillations,

a lever' for varying said fabric-feed movements, and a compound levermechamsm adapted to jointly move said bar and fabric fee varying leverand to lock the same in regulated position, whereby said needlecsrocated needle bar, a rocker arm for oscillating the same having anadjustable connec- :0

tion to said needle bar for varying said oscillations, and a fabric-feedpresser foot, a v

rocker arm for reciprocating the same havmg an ad ustable connection forvarying said reciprocations, of lever mechanisms for 85 independentlymoving said adjustable connections in their respective rocker arms,other lever mechanism for jointly holding said connections in a fixedadjusted relation in their respective rocker arms, pattern discs 40rotatable between said needle reciprocations adapted to move saidconnections in their respective arms in determined cooperative variedrelations, and a clutch mechanism for engaging and disengaging saidpattern 45 discs.

In testimony whereof I afiix my signature. I

IRVIN RADER.

